Link for Authorization server: https://github.com/spring-projects/spring-authorization-server
This project pretty much has everything in terms of OAuth and Identity provider.
My question is, How to achieve multi-tenancy at the Identity provider level.
I know there are multiple ways to achieve multi-tenancy in general.
The scenario I am interested in is this:
An organization provides services to multiple tenants.
Each tenant is associated with a separate database (Data isolation including user data)
When a user visits dedicated Front-end app(per tenant) and negotiate access tokens from Identity provider
Identity provider then identifies tenant (Based on header/ Domain name) and generates access token with tenant_id
This access token then is passed on to down-stream services, which intern can extract tenant_id and decide the data source
I have a general idea about all the above steps, but I am not sure about point 4.
I am not sure How to configure different data sources for different tenants on the Identity Provider? How to add tenant_id in Token?
Link to the issue: https://github.com/spring-projects/spring-authorization-server/issues/663#issue-1182431313
This is not related to Spring auth Server, but related to approaches that we can think for point # 4
I remember the last time we implemented a similar approach, where we had below options
To have unique email addresses for the users thereby using the global database to authenticate the users and post authentication, set up the tenant context.
In case of users operating in more than 1 tenant, post authentication, we can show the list of tenant's that the user has access to, which enables setting the tenant context and then proceeding with the application usage.
More details can be read from here
This is really a good question and I really want to know how to do it in new Authorization Server in a proper way. In Spring Resource Server there is a section about Multitenancy. I did it successfully.
As far as new Spring Authorization Server multitenancy concerns. I have also done it for the password and the Client Credentials grant type.
But please note that although it is working but how perfect is this. I don't know because I just did it for learning purpose. It's just a sample. I will also post it on my github when I would do it for the authorization code grant type.
I am assuming that the master and tenant database configuration has been done. I can not provide the whole code here because it's lot of code. I will just provide the relevant snippets. But here is just the sample
#Configuration
#Import({MasterDatabaseConfiguration.class, TenantDatabaseConfiguration.class})
public class DatabaseConfiguration {
}
I used the separate database. What I did I used something like the following in the AuthorizationServerConfiguration.
#Import({OAuth2RegisteredClientConfiguration.class})
public class AuthorizationServerConfiguration {
#Bean
#Order(Ordered.HIGHEST_PRECEDENCE)
public SecurityFilterChain authorizationServerSecurityFilterChain(HttpSecurity http) throws Exception {
OAuth2AuthorizationServerConfigurer<HttpSecurity> authorizationServerConfigurer = new OAuth2AuthorizationServerConfigurer<>();
....
http.addFilterBefore(new TenantFilter(), OAuth2AuthorizationRequestRedirectFilter.class);
SecurityFilterChain securityFilterChain = http.formLogin(Customizer.withDefaults()).build();
addCustomOAuth2ResourceOwnerPasswordAuthenticationProvider(http);
return securityFilterChain;
}
}
Here is my TenantFilter code
public class TenantFilter extends OncePerRequestFilter {
private static final Logger LOGGER = LogManager.getLogger();
#Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
String requestUrl = request.getRequestURL().toString();
if (!requestUrl.endsWith("/oauth2/jwks")) {
String tenantDatabaseName = request.getParameter("tenantDatabaseName");
if(StringUtils.hasText(tenantDatabaseName)) {
LOGGER.info("tenantDatabaseName request parameter is found");
TenantDBContextHolder.setCurrentDb(tenantDatabaseName);
} else {
LOGGER.info("No tenantDatabaseName request parameter is found");
response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
response.setContentType(MediaType.APPLICATION_JSON_VALUE);
response.getWriter().write("{'error': 'No tenant request parameter supplied'}");
response.getWriter().flush();
return;
}
}
filterChain.doFilter(request, response);
}
public static String getFullURL(HttpServletRequest request) {
StringBuilder requestURL = new StringBuilder(request.getRequestURL().toString());
String queryString = request.getQueryString();
if (queryString == null) {
return requestURL.toString();
} else {
return requestURL.append('?').append(queryString).toString();
}
}
}
Here is the TenantDBContextHolder class
public class TenantDBContextHolder {
private static final ThreadLocal<String> TENANT_DB_CONTEXT_HOLDER = new ThreadLocal<>();
public static void setCurrentDb(String dbType) {
TENANT_DB_CONTEXT_HOLDER.set(dbType);
}
public static String getCurrentDb() {
return TENANT_DB_CONTEXT_HOLDER.get();
}
public static void clear() {
TENANT_DB_CONTEXT_HOLDER.remove();
}
}
Now as there is already configuration for master and tenant database. In these configurations we also check for the TenantDBContextHolder
class that it contains the value or not. Because when request comes for token then we check the request and set it in TenantDBContextHolder. So base on this thread local variable right database is connected and the token issue to the right database. Then in the token customizer. You can use something like the following
public class UsernamePasswordAuthenticationTokenJwtCustomizerHandler extends AbstractJwtCustomizerHandler {
....
#Override
protected void customizeJwt(JwtEncodingContext jwtEncodingContext) {
....
String tenantDatabaseName = TenantDBContextHolder.getCurrentDb();
if (StringUtils.hasText(tenantDatabaseName)) {
URL issuerURL = jwtClaimSetBuilder.build().getIssuer();
String issuer = issuerURL + "/" + tenantDatabaseName;
jwtClaimSetBuilder.claim(JwtClaimNames.ISS, issuer);
}
jwtClaimSetBuilder.claims(claims ->
userAttributes.entrySet().stream()
.forEach(entry -> claims.put(entry.getKey(), entry.getValue()))
);
}
}
Now I am assuming that the Resource Server is also configure for multitenancy. Here is the link Spring Security Resource Server Multitenancy. Basically You have to configure two beans for multitenancy like the following
public class OAuth2ResourceServerConfiguration {
....
#Bean
public JWTProcessor<SecurityContext> jwtProcessor(JWTClaimsSetAwareJWSKeySelector<SecurityContext> keySelector) {
ConfigurableJWTProcessor<SecurityContext> jwtProcessor = new DefaultJWTProcessor<>();
jwtProcessor.setJWTClaimsSetAwareJWSKeySelector(keySelector);
return jwtProcessor;
}
#Bean
public JwtDecoder jwtDecoder(JWTProcessor<SecurityContext> jwtProcessor, OAuth2TokenValidator<Jwt> jwtValidator) {
NimbusJwtDecoder decoder = new NimbusJwtDecoder(jwtProcessor);
OAuth2TokenValidator<Jwt> validator = new DelegatingOAuth2TokenValidator<>(JwtValidators.createDefault(), jwtValidator);
decoder.setJwtValidator(validator);
return decoder;
}
}
Now two classes for spring. From which you can get the tenant Identifier from your token.
#Component
public class TenantJwtIssuerValidator implements OAuth2TokenValidator<Jwt> {
private final TenantDataSourceRepository tenantDataSourceRepository;
private final Map<String, JwtIssuerValidator> validators = new ConcurrentHashMap<>();
....
#Override
public OAuth2TokenValidatorResult validate(Jwt token) {
String issuerURL = toTenant(token);
JwtIssuerValidator jwtIssuerValidator = validators.computeIfAbsent(issuerURL, this::fromTenant);
OAuth2TokenValidatorResult oauth2TokenValidatorResult = jwtIssuerValidator.validate(token);
String tenantDatabaseName = JwtService.getTenantDatabaseName(token);
TenantDBContextHolder.setCurrentDb(tenantDatabaseName);
return oauth2TokenValidatorResult;
}
private String toTenant(Jwt jwt) {
return jwt.getIssuer().toString();
}
private JwtIssuerValidator fromTenant(String tenant) {
String issuerURL = tenant;
String tenantDatabaseName = JwtService.getTenantDatabaseName(issuerURL);
TenantDataSource tenantDataSource = tenantDataSourceRepository.findByDatabaseName(tenantDatabaseName);
if (tenantDataSource == null) {
throw new IllegalArgumentException("unknown tenant");
}
JwtIssuerValidator jwtIssuerValidator = new JwtIssuerValidator(issuerURL);
return jwtIssuerValidator;
}
}
Similarly
#Component
public class TenantJWSKeySelector implements JWTClaimsSetAwareJWSKeySelector<SecurityContext> {
....
#Override
public List<? extends Key> selectKeys(JWSHeader jwsHeader, JWTClaimsSet jwtClaimsSet, SecurityContext securityContext) throws KeySourceException {
String tenant = toTenantDatabaseName(jwtClaimsSet);
JWSKeySelector<SecurityContext> jwtKeySelector = selectors.computeIfAbsent(tenant, this::fromTenant);
List<? extends Key> jwsKeys = jwtKeySelector.selectJWSKeys(jwsHeader, securityContext);
return jwsKeys;
}
private String toTenantDatabaseName(JWTClaimsSet claimSet) {
String issuerURL = (String) claimSet.getClaim("iss");
String tenantDatabaseName = JwtService.getTenantDatabaseName(issuerURL);
return tenantDatabaseName;
}
private JWSKeySelector<SecurityContext> fromTenant(String tenant) {
TenantDataSource tenantDataSource = tenantDataSourceRepository.findByDatabaseName(tenant);
if (tenantDataSource == null) {
throw new IllegalArgumentException("unknown tenant");
}
JWSKeySelector<SecurityContext> jwtKeySelector = fromUri(jwkSetUri);
return jwtKeySelector;
}
private JWSKeySelector<SecurityContext> fromUri(String uri) {
try {
return JWSAlgorithmFamilyJWSKeySelector.fromJWKSetURL(new URL(uri));
} catch (Exception ex) {
throw new IllegalArgumentException(ex);
}
}
}
Now what about authorization code grant type grant type flow. I get the tenant identifier in this case too. But when it redirects me to login page then I lost the tenant identifier because I think it creates a new request for the login page from the authorization code request. Anyways I am not sure about it because I have to look into the code of authorization code flow that what it is actually doing. So my tenant identifier is losing when it redirects me to login page.
But in case of password grant type and client credentials grant type there is no redirection so I get the tenant identifier in later stages and I can successfully use it to put into my token claims.
Then on the resource server I get the issuer url. Get the tenant identifier from the issuer url. Verify it. And it connects to the tenant database on resource server.
How I tested it. I used the spring client. You can customize the request for authorization code flow. Password and client credentials to include the custom parameters.
Thanks.
------------------ Solve the Authorization Code login problem for multitenancy -------------
I solved this issue too. Actually what I did in my security configuration. I used the following configuration
public class SecurityConfiguration {
.....
#Bean(name = "authenticationManager")
public AuthenticationManager authenticationManager(AuthenticationManagerBuilder builder) throws Exception {
AuthenticationManager authenticationManager = builder.getObject();
return authenticationManager;
}
#Bean
#DependsOn(value = {"authenticationManager"})
public TenantUsernamePasswordAuthenticationFilter tenantAuthenticationFilter(AuthenticationManagerBuilder builder) throws Exception {
TenantUsernamePasswordAuthenticationFilter filter = new TenantUsernamePasswordAuthenticationFilter();
filter.setAuthenticationManager(authenticationManager(builder));
filter.setAuthenticationDetailsSource(new TenantWebAuthenticationDetailsSource());
//filter.setAuthenticationFailureHandler(failureHandler());
return filter;
}
#Bean
public SecurityFilterChain defaultSecurityFilterChain(HttpSecurity http) throws Exception {
FederatedIdentityConfigurer federatedIdentityConfigurer = new FederatedIdentityConfigurer().oauth2UserHandler(new UserRepositoryOAuth2UserHandler());
AuthenticationManagerBuilder authenticationManagerBuilder = http.getSharedObject(AuthenticationManagerBuilder.class);
http.addFilterBefore(tenantAuthenticationFilter(authenticationManagerBuilder), UsernamePasswordAuthenticationFilter.class)
.authorizeRequests(authorizeRequests -> authorizeRequests.requestMatchers(new AntPathRequestMatcher("/h2-console/**")).permitAll()
.antMatchers("/resources/**", "/static/**", "/webjars/**").permitAll()
.antMatchers("/login").permitAll()
.anyRequest().authenticated()
)
......
.apply(federatedIdentityConfigurer);
return http.build();
}
Actually the problem was in case of Authorization Code is that you first redirect to login page. After successfully login you see the consent page. But when you comes to consent page then you lost the tenant parameter.
The reason is the spring internal class OAuth2AuthorizationEndpointFilter intercepts the request for Authorization Code. It checks user is authenticated or not. If user is not authenticated then it shows the login page. After successfully login it checks if consent is required. And if required then it makes a redirect uri with just three parameters. Here is the spring internal code
private void sendAuthorizationConsent(HttpServletRequest request, HttpServletResponse response,
OAuth2AuthorizationCodeRequestAuthenticationToken authorizationCodeRequestAuthentication,
OAuth2AuthorizationConsentAuthenticationToken authorizationConsentAuthentication) throws IOException {
....
if (hasConsentUri()) {
String redirectUri = UriComponentsBuilder.fromUriString(resolveConsentUri(request))
.queryParam(OAuth2ParameterNames.SCOPE, String.join(" ", requestedScopes))
.queryParam(OAuth2ParameterNames.CLIENT_ID, clientId)
.queryParam(OAuth2ParameterNames.STATE, state)
.toUriString();
this.redirectStrategy.sendRedirect(request, response, redirectUri);
} else {
if (this.logger.isTraceEnabled()) {
this.logger.trace("Displaying generated consent screen");
}
DefaultConsentPage.displayConsent(request, response, clientId, principal, requestedScopes, authorizedScopes, state);
}
}
See the above method is private and I found no way that I can customize it. May be there is but I didn't find it. Anyways now your consent controller is call. But there is no tenant Identifier. You can't get it. And after consent there is no way that it connects to tenant database base in identifier.
So the first step is to add tenant identifier to login page. And then after login you should have this tenant identifier so you can set it on your consent page. And after that when you submit your consent form then this parameter will be there.
Btw I did it some time ago and may be I miss something but this is what I did.
Now how you get your parameter at login page. I solved it using the following. First I created a constant as I have to access the name from multiple times
public interface Constant {
String TENANT_DATABASE_NAME = "tenantDatabaseName";
}
Create the following class
public class RedirectModel {
#NotBlank
private String tenantDatabaseName;
public void setTenantDatabaseName(String tenantDatabaseName) {
this.tenantDatabaseName = tenantDatabaseName;
}
public String getTenantDatabaseName() {
return tenantDatabaseName;
}
}
Then on my Login controller I get it using the following code
#Controller
public class LoginController {
#GetMapping("/login")
public String login(#Valid #ModelAttribute RedirectModel redirectModel, Model model, BindingResult result) {
if (!result.hasErrors()) {
String tenantDatabaseName = redirectModel.getTenantDatabaseName();
String currentDb = TenantDBContextHolder.getCurrentDb();
LOGGER.info("Current database is {}", currentDb);
LOGGER.info("Putting {} as tenant database name in model. So it can be set as a hidden form element ", tenantDatabaseName);
model.addAttribute(Constant.TENANT_DATABASE_NAME, tenantDatabaseName);
}
return "login";
}
}
So this is the first step that I have my tenant identifier in my login page that is send to me by request.
Now the configuration that I used in my Security configuration. You can see that I am using TenantUsernamePasswordAuthenticationFilter. Here is the filer
public class TenantUsernamePasswordAuthenticationFilter extends UsernamePasswordAuthenticationFilter {
private static final Logger LOGGER = LogManager.getLogger();
#Override
public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response)
throws AuthenticationException {
String tenantDatabaseName = obtainTenantDatabaseName(request);
LOGGER.info("tenantDatabaseName is {}", tenantDatabaseName);
LOGGER.info("Setting {} as tenant database name in thread local context.", tenantDatabaseName);
TenantDBContextHolder.setCurrentDb(tenantDatabaseName);
return super.attemptAuthentication(request, response);
}
private String obtainTenantDatabaseName(HttpServletRequest request) {
return request.getParameter(Constant.TENANT_DATABASE_NAME);
}
}
And in the configuration I am setting TenantWebAuthenticationDetailsSource on this filter which is here
public class TenantWebAuthenticationDetailsSource extends WebAuthenticationDetailsSource {
#Override
public TenantWebAuthenicationDetails buildDetails(HttpServletRequest context) {
return new TenantWebAuthenicationDetails(context);
}
}
Here is the class
public class TenantWebAuthenicationDetails extends WebAuthenticationDetails {
private static final long serialVersionUID = 1L;
private String tenantDatabaseName;
public TenantWebAuthenicationDetails(HttpServletRequest request) {
super(request);
this.tenantDatabaseName = request.getParameter(Constant.TENANT_DATABASE_NAME);
}
public TenantWebAuthenicationDetails(String remoteAddress, String sessionId, String tenantDatabaseName) {
super(remoteAddress, sessionId);
this.tenantDatabaseName = tenantDatabaseName;
}
public String getTenantDatabaseName() {
return tenantDatabaseName;
}
}
Now after spring authenticates the user then I have the tenant name in details. Then in the consent controller I use
#Controller
public class AuthorizationConsentController {
....
#GetMapping(value = "/oauth2/consent")
public String consent(Authentication authentication, Principal principal, Model model,
#RequestParam(OAuth2ParameterNames.CLIENT_ID) String clientId,
#RequestParam(OAuth2ParameterNames.SCOPE) String scope,
#RequestParam(OAuth2ParameterNames.STATE) String state) {
......
String registeredClientName = registeredClient.getClientName();
Object webAuthenticationDetails = authentication.getDetails();
if (webAuthenticationDetails instanceof TenantWebAuthenicationDetails) {
TenantWebAuthenicationDetails tenantAuthenticationDetails = (TenantWebAuthenicationDetails)webAuthenticationDetails;
String tenantDatabaseName = tenantAuthenticationDetails.getTenantDatabaseName();
model.addAttribute(Constant.TENANT_DATABASE_NAME, tenantDatabaseName);
}
model.addAttribute("clientId", clientId);
.....
return "consent-customized";
}
}
Now I have my tenant identifier on my consent page. After submitting it it's in the request parameter.
There is another class that I used and it was
public class TenantLoginUrlAuthenticationEntryPoint extends LoginUrlAuthenticationEntryPoint {
public TenantLoginUrlAuthenticationEntryPoint(String loginFormUrl) {
super(loginFormUrl);
}
#Override
protected String determineUrlToUseForThisRequest(HttpServletRequest request, HttpServletResponse response,
AuthenticationException exception) {
String tenantDatabaseNameParamValue = request.getParameter(Constant.TENANT_DATABASE_NAME);
String redirect = super.determineUrlToUseForThisRequest(request, response, exception);
String url = UriComponentsBuilder.fromPath(redirect).queryParam(Constant.TENANT_DATABASE_NAME, tenantDatabaseNameParamValue).toUriString();
return url;
}
}
Anyways this is how I solved it. I don't have any such requirement in any of my project but I want to do it using this new server so I just solved it in this way.
Anyways there is lot of code. I tested it using the Spring oauth2 client and it was working. Hopefully I will create some project and upload it on my Github. Once I will run it again then I will put more explanation here of the flow. Specially for the last part that after submitting the consent how it set in the Thread Local variable.
After that everything is straight forward.
Hopefully it will help.
Thanks
I am trying to call an API using POST method. There is no body in it and all parameters in the URL only.
This is how I am building request to call via okHttpClient version :
Request requestToken = new Request.Builder()
.url(TOKEN_GEN_API_URL + ConfigConstants.TOKEN_CLIENT_ID_PARAM
+ TOKEN_CLIENT_ID_PARAM_VALUE + ConfigConstants.TOKEN_CLINET_SECRET_PARAM
+ TOKEN_CLIENT_SECRET_PARAM_VALUE + ConfigConstants.TOKEN_GRANT_TYPE_PARAM
+ TOKEN_GRANT_TYPE_PARAM_VALUE)
.post(requestBody)
.addHeader("Content-Type", "application/json")
.addHeader("cache-control", "no-cache")
.build();
ConfigConstants Class :
public class ConfigConstants {
public static final String TOKEN_CLIENT_ID_PARAM = "?client_id=";
public static final String TOKEN_CLINET_SECRET_PARAM = "&client_secret=";
public static final String TOKEN_GRANT_TYPE_PARAM = "&grant_type=";
}
This would create URL something like this :
<endpoint>?client_id=...&client_secret=..&grant_type=..
Now, I am trying call this via RestTemplate, I think it would less complicated in that. But, I am not sure how to build this request without any body.
#RestController
public class TokenRestAPI {
#Autowired
RestTemplate restTemplate;
private static final Logger logger = LogManager.getLogger(TokenRestAPI.class);
#Value("${TOKEN_CLIENT_SEC_PARAM_VALUE}")
private String TOKEN_CLIENT_SECRET_PARAM_VALUE;
#Value("${TOKEN_CLIENT_ID_PARAM_VALUE}")
private String TOKEN_CLIENT_ID_PARAM_VALUE;
#Value("${TOKEN_GRANT_TYPE_PARAM_VALUE}")
private String TOKEN_GRANT_TYPE_PARAM_VALUE;
#Value("${TOKEN_GEN_API_URL}")
private String TOKEN_GEN_API_URL;
#PostMapping("/")
public void getAuthToken() {
ResponseEntity<TokenPOJO> response = restTemplate.postForEntity(TOKEN_GEN_API_URL, request, TokenPOJO.class);
}
}
If you don't want to send a body, just pass null as the request object:
ResponseEntity<TokenPOJO> response = restTemplate.postForEntity(TOKEN_GEN_API_URL, null, TokenPOJO.class);
you will still have to either build up the URL or use the parameters. The last you can do by putting variables in your url string like:
String url = "http://example.com?foo={bar}"
and pass a map with the variable name as key and the parameter value as the value.
I'm creating a load balance feature on my project in which I have three server that will simultaneously ping for 15 seconds. However, when I already run my client-side, it always goes to the fallback page and received an error of "LoadBalancer [server]: Error choosing server for key default" even if the servers are already running.
Here are the codes in my project:
app.properties
server.port=8788
server.ribbon.eureka.enabled=false
server.ribbon.listOfServers=localhost:8787,localhost:8789,localhost:8790
#every 15 seconds
server.ribbon.ServerListRefreshInterval=15000
client service (wherein it is my fallback method)
private LoadBalancerClient loadBalancer;
private RestTemplate restTemplate;
public ClientService(RestTemplate rest) {
this.restTemplate = rest;
}
#HystrixCommand(fallbackMethod = "reliable")
public String login() {
ServiceInstance instance = loadBalancer.choose("server");
URI uri = URI.create(String.format("http://%s:%s/admin/ping", instance.getHost(), instance.getPort()));
//URI uri = URI.create("http://localhost:8787/admin/ping");
return this.restTemplate.getForObject(uri, String.class);
}
MainController
public class MainController{
private final static Logger LOGGER = LoggerFactory.getLogger(MainController.class);
#Autowired
private ClientService clientService;
#LoadBalanced
#Bean
public RestTemplate rest(RestTemplateBuilder builder) {
return builder.build();
}
#Autowired
RestTemplate restTemplate;
...
Client client = new Client();
WebResource resource = client.resource("http://%s:%s/auth/loginvalidate");
ClientResponse response = resource.type(MediaType.APPLICATION_JSON)
.header("Authorization", "Basic " + encodePw)
.get(ClientResponse.class);
I got rid of that error by doing two things:
1) Add the following properties to the remote service:
management.endpoints.web.exposure.include: "*"
management.endpoint.health.enabled: "true"
management.endpoint.restart.enabled: "true"
management.endpoint.info.enabled: "true"
2) Make sure that there is a ping endpoint in the remote service:
public class MainController{
#RequestMapping("/")
public String ribbonPing() {
return this.hostName;
}
}
I added a few amendments to the example provided by Kubernetes Circuit Breaker & Load Balancer Example to test this scenario and put in here.
I suggest that you follow those links as a kind of "best practises" guide in order to build your Hystrix/Ribbon solution. Pay special attention to:
the starters/dependencies added to the pom files
the structure of the Java classes (how and where each bean is declared and injected)
how you configure your (micro-)services (in this case with K8s ConfigMaps)
I have a problem using Spring WebFlux. Actually my project is composed by
Api wrapper ( basically code that uses WebClient to call a remote service)
private final BinanceServerTimeApi binanceServerTimeApi;
private final WebClient webClient;
#Value("${binance.api.secret}")
private String secret;
#Autowired
public BinanceAccountApi(#Value("${binance.api.baseurl}") String baseUrl,
#Value("${binance.api.key}") String key,
BinanceServerTimeApi binanceServerTimeApi) {
this.binanceServerTimeApi = binanceServerTimeApi;
this.webClient = WebClient.builder()
.baseUrl(baseUrl)
.defaultHeader("X-MBX-APIKEY",key)
.build();
}
public Mono<AccountInformation> getAccountInformation() {
Mono<ResponseServerTime> responseServerTime = binanceServerTimeApi.getServerTime();
String apiEndpoint = "api/v3/account?";
String queryParams = "recvWindow=50000×tamp=" + responseServerTime.block().getServerTime();
String signature = HmacSHA256Signer.sign(queryParams, secret);
String payload = apiEndpoint+queryParams+"&signature="+signature;
log.info("final url for getAccountInformation is {}", payload);
return this.webClient.get().uri(payload).accept(MediaType.APPLICATION_JSON)
.retrieve().bodyToMono(AccountInformation.class).log();
}
the endpoint used by my javascript client
#Autowired
private BinanceAccountApi binanceAccountApi;
public Mono<ServerResponse> getAccountPortfolio(ServerRequest request) {
return binanceAccountApi.getAccountInformation()
.flatMap(accountInformation -> ServerResponse.ok()
.contentType(MediaType.APPLICATION_JSON)
.body(fromObject(accountInformation))).log();
}
Here my main class
#Bean
public RouterFunction<ServerResponse> route(AccountHandler handler) {
return RouterFunctions .route(GET("/route/accountInformation").and(accept(MediaType.APPLICATION_JSON)),handler::getAccountPortfolio);
}
When I hit a get to this route /route/accountInformation, the first call works fine but the others call are pending (the server never sends the response).
Note that the first call to the endpoint lasts for 2000 ms.
This is my first approach to the WebFlux project and I am trying to figure out how it works.
Without more information it's hard to tell what's happening (the output of your log operator should help here). But using the block operator right in the middle of your handler is suspicious; by doing that, you might be blocking one of the few server threads.
Try something like:
return binanceServerTimeApi.getServerTime().flatMap(responseServerTime -> {
// ...
return this.webClient.get().uri(payload).accept(MediaType.APPLICATION_JSON)
.retrieve().bodyToMono(AccountInformation.class).log();
});
This will chain operations in a non-blocking way. If the situation doesn't improve after that, try adding a few log operators to understand where time is spent.
I want to use Springfox SwaggerUI for my Rest API (spring-mvc) documentation.
I use version header in #RequestMapping annotation, but if I have two versions of same method, in SwaggerUI I can see only one.
For example:
#GetMapping(value = "/users", headers = "X-API-VERSION=1")
public List<User> getUsersV1(){...}
#GetMapping(value = "/users", headers = "X-API-VERSION=2")
public List<User> getUsersV2(){...}
Above code results in only one method visible in api documentation.
Is there any option to configure Swagger to differ endpoints with consideration of my version header?
After some research I have found solution to my problem, maybe it will help someone in the future. I add "#v" suffix to path using PathDecorator.
Now I can see all my methods in generated documentation.
#Component
#Order(value = Ordered.HIGHEST_PRECEDENCE + 70)
public class VersionPathDecorator implements PathDecorator {
private final static Logger logger = LoggerFactory.getLogger(VersionPathDecorator.class);
#Override
public Function<String, String> decorator(PathContext context) {
return (path) -> {
StringBuilder sb = new StringBuilder(path);
Field parent = null;
try {
parent = PathContext.class.getDeclaredField("parent");
parent.setAccessible(true);
RequestMappingContext rmc = (RequestMappingContext) parent.get(context);
rmc.headers()
.stream()
.filter(h -> RequestHeader.X_API_VERSION.headerName.equals(h.getName()))
.map(NameValueExpression::getValue)
.findFirst()
.ifPresent(v -> sb.append("#v").append(v));
} catch (NoSuchFieldException | IllegalAccessException e) {
logger.error("path decoration failed", e);
}
return sb.toString();
};
}
#Override
public boolean supports(DocumentationContext documentationContext) {
return true;
}
}
Swagger identifies services by its endpoint.
Each feature must respond to a different endpoint, and headers for that function should not be used.
If you are using REST services read a bit about Restfull and follow its principles. This url can help you: http://docs.oracle.com/javaee/6/tutorial/doc/gijqy.html